configure: Add a missing comma.

configure

@@ -14252,10 +14252,9 @@ $as_echo "#define HAVE_PPDEV 1" >>confdefs.h
 fi
 
 ac_wine_check_funcs_save_LIBS="$LIBS"
-LIBS="$LIBS "
+LIBS="$LIBS $PTHREAD_LIBS"
 for ac_func in \
-        pthread_getthreadid_np \
-        $PTHREAD_LIBS
+        pthread_getthreadid_np
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

configure.ac

@@ -1564,7 +1564,7 @@ fi
 
 dnl **** Check for pthread functions ****
 WINE_CHECK_LIB_FUNCS(\
-        pthread_getthreadid_np \
+        pthread_getthreadid_np,
         [$PTHREAD_LIBS])
 
 dnl **** Check for zlib ****